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Organic electroluminescent material and organic luminescent device thereof

An electroluminescent material and organic technology, applied in organic light-emitting devices, light-emitting materials, materials of organic semiconductor devices, etc., can solve the problems of low luminous efficiency, high driving voltage, unsatisfactory luminous performance, etc., and achieve high luminous efficiency, The effect of low driving voltage and strong carrier transport capability

Inactive Publication Date: 2018-02-02
CHANGCHUN HYPERIONS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Fluorene compounds are a commonly used host material, but the common fluorene materials have unsatisfactory luminous properties, such as low luminous efficiency and high driving voltage.

Method used

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  • Organic electroluminescent material and organic luminescent device thereof
  • Organic electroluminescent material and organic luminescent device thereof
  • Organic electroluminescent material and organic luminescent device thereof

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preparation example Construction

[0043] The preparation method of a kind of organic electroluminescent material described in the present invention, comprises that shown raw material generates a kind of organic electroluminescent material shown in formula I by following route reaction:

[0044]

[0045] Among them, R 1 , R 2 Independently selected from substituted or unsubstituted C6-C50 aryl, substituted or unsubstituted C6-C50 arylamine, substituted or unsubstituted C6-C50 aryl ether, substituted or unsubstituted C3-C50 heteroaryl A sort of;

[0046] L is selected from one of substituted or unsubstituted sulfone groups, substituted or unsubstituted phosphinyl groups, substituted or unsubstituted carbonyl groups, and substituted or unsubstituted C3-C50 heteroaryl groups;

[0047] The heteroatom in the heteroaryl group is at least one of B, N, O, S, Si or P.

[0048] The present invention also provides an organic light emitting device, and the organic light emitting device may be an organic light emittin...

Embodiment 1

[0049] Embodiment 1: the preparation of compound 1

[0050]

[0051] Step1. Take 100mmol 3-bromo-9H-fluorenone, add 1 equivalent of 3-thiol-9H-fluorenone, 300mmol potassium tert-butoxide, 1mmol Pd2 (dba) 3 , toluene, replaced with argon three times, added 1 mmol of tri-tert-butylphosphine, replaced with argon three times again, reacted at reflux temperature for 10 h, passed the crude product through a silica gel column, and obtained 72 mmol of compound 1-1.

[0052] Step2. Take 72 mmol of compound 1-1, dissolve in DCM, cool to 0 degrees Celsius, add 2 equivalents of m-CPBA, gradually warm up to room temperature, stir and react for 6 hours, after the reaction is completed, wash with saturated anhydrous sodium bisulfite , the organic phase was dried and spin-dried, and the obtained product was passed through a silica gel column to obtain 1-250 mmol of the target product.

[0053] Step3. Take 50 mmol 1-2, add toluene to dissolve, add 2.5 equivalents of 4-methylbenzenesulfonyl...

Embodiment 2

[0054] Embodiment 2: the preparation of compound 6

[0055] Synthetic method is the same as embodiment 1, and phenylboronic acid is replaced as:

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PUM

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Abstract

The invention provides an organic electroluminescent material and an organic luminescent device thereof and belongs to the technical field of organic photoelectric materials. A structure of the organic electroluminescent material disclosed by the invention contains a fluorene structure; different from common 9,9-diphenyl fluorene or 9,9-dimethyl fluorene, the organic electroluminescent material disclosed by the invention has a smaller compound structure conjugation range, a higher triplet state energy level and relatively stronger carrier transmission capability. Meanwhile, a vitrification conversion temperature of the compound is effectively improved by introducing a rigid structure into the structure. Compared with the prior art, the organic electroluminescent material can solve the technical problems that an organic photoelectric material in the prior art has a lower luminescent efficiency, higher driving voltage, poor luminescent property and the like. Compared with the prior art,the driving voltage of the organic electroluminescent device disclosed by the invention can be lowest to 3.6V, and the luminescent efficiency can reach 48.7cd / A.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, in particular to an organic electroluminescence material and an organic light emitting device thereof. Background technique [0002] Organic electroluminescence refers to the phenomenon that organic materials are excited by electric current and electric field to emit light under the action of electric field. Organic light-emitting diodes (OLEDs) are a next-generation display technology that utilizes this phenomenon to realize displays. Since Tang C.W. and Vanslyke S.A. of American Kodak Company produced the first organic electroluminescent device with excellent performance in 1987, organic electroluminescent displays have attracted great interest due to their advantages. [0003] Organic electroluminescent materials can be divided into two generations according to technological updates. The first generation is fluorescent materials, whose internal quantum efficiency can o...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07C317/14C07C317/32C07D209/86C07D219/02C07C317/22C07C323/65C07D213/34C07D239/26C07D251/24C07D217/14C07F9/53C07F9/58C07F9/6512C07F9/576C07F9/60C07F9/62C07C49/675C07C225/22C07D265/38C07D401/14C07C49/755C07C323/22C07C317/24C07D213/50C07D217/16C07D215/14C07D219/06H01L51/50H01L51/54
CPCC09K11/06C07C49/675C07C49/755C07C225/22C07C317/14C07C317/22C07C317/24C07C317/32C07C323/22C07C323/65C07D209/86C07D213/34C07D213/50C07D215/14C07D217/14C07D217/16C07D219/02C07D219/06C07D239/26C07D251/24C07D265/38C07D401/14C07F9/5325C07F9/5765C07F9/58C07F9/60C07F9/62C07F9/6512H10K85/60H10K85/626H10K85/631H10K85/654H10K85/6572H10K50/11H10K2102/00H10K2102/301
Inventor 孙可一蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
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